23. The Second Law of Thermodynamics
Heat Engines & PV Diagrams
3:32 minutes
Problem 20.26b
Textbook Question
Textbook Question(II) A heat pump is used to keep a house warm at 22°C. How much work is required of the pump to deliver 2800 J of heat into the house if the outdoor temperature is
(b) - 15°C? Assume a COP of 3.0.
COP = T_H / (T_H - T_L) .
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